3 Rules of 2-Color Shapeshifting in a Microworld on a Flikering Torus

48h Ludum Dare 35 compo theme: shapeshifting.A variant of sokoban, with shapeshifting, and pipes, and guns, on a torus which flickers.Just check the help (f1 or h).Controls: arrows or WSAD, r for restart.Warning: it really flickers.